Lalah Hathaway and Ruben Studdard

He’s an “American Idol” champ, and she’s soul music royalty. Lalah Hathaway, often dubbed the first daughter of soul (her dad is the late Donny Hathaway), and Ruben Studdard, winner of Season 2 of “Idol,” are teaming up for three evenings here. There will be duets featuring his sweet croon and her sexy contralto, as well as solo numbers. Each has released six albums, including Studdard’s brand-new “Unconditional Love” featuring a duet with Hathaway on “If This World Were Mine.” Read an interview with Studdard in Saturday’s Variety section. Jon Bream